If we did all things we are capable of, we would literally astound ourselves.

– Thomas A. Edison

Wednesday, April 21, 2010

AIPMT 2010 Multiple Choice Questions on Vectors

The following questions (MCQ) on vectors were included in the AIPMT 2010 question paper:

(1) Six vectors, a through f have the magnitudes and directions indicated in the figure. Which of the following statements is true?

(1) b + e = f

(2) b + c = f

(3) d + c = f

(4) d + e = f

The correct option is (4) as is clear from the adjoining figure



(2) A particle has initial velocity (3î + 4ĵ) and has acceleration (0.4î + 0.3ĵ). Its speed after 10 s is

(1) 10 units

(2) 7 units

(3) 7√2 units

(4) 8.5 units

We have v = u + at with usual notations.

Therefore the velocity after 10 s is given by

v = (3î + 4ĵ) + (0.4î + 0.3ĵ)10 = 7î + 7ĵ

The speed after 10 s is the magnitude of the above velocity vector and is equal to √(72 + 72) = 7√2 units [Option (3)].

Now see these questions (MCQ) on vectors.

1 comment:

Abijith raj p said...

some more questions